1480 gram carbon 29er wheelset 15mm front hub, 142x12 rear. Xd driver. The rear uses stans freehub and end caps so you can convert this to qr135 or switch the free hub to a standard shimano freehub. The rims are hookless. Internal diameter is 19mm. My friend had this set and preferred it to his stans valors because they are much stronger. There is no weight limit like stans. Bearings are super smooth. They are true. The rims do have some cosmetic marks from normal use.